Incubator



J. B. GLOVER. INCUBATOR.

AEPLICATlON FILED JULY 29,- I919.

Patented Oct. 12, 1920.

2 SHEETS-SHEET I.

I WITNESSES INVENTOR A TTOR/VEYS WITNESSES J. B. GLOVER.

v INCUBATOR.

APPLICATION FILED JULY 29, 1919.

1,355,602. Patented Oct. 12, 1920.

2 SHEETS-SHEET 2.

INVENTOR I ffi 6207 61; a @M 94 A TTOR/VEYS UNITED STATES PATENT QFFI CE.

JOHN B. GLOVER, 0F MATTOON, ILLINOIS. V,

mcUBA'ron.

meansfor regulating the same to prevent overheating.

In the drawmgs:

Figure 1 is a perspective view of an incubator provided with the improvement,

Fig.- 2 is an end view of the heater with parts in section,

Fig. 3 is a horizontal section through the incubator casing above the heater, I

Fig. at is a vertical section at th draft tube of the heater.

The present embodiment of the invention is shown in connection with an improved incubator of usual form, comprising the casing 1 for receiving the eggsand heater, and an oil lamp 2 for supplying heat to the heater. The improved heater consists of a tubular structure comprising an upper port on 3 for containing water, and a lower portlon 4 for the heated air from the lamp, the two chambers or compartments 3 and 4 being combined into a single substantially cylindrical structure.

The parts are separated by a horizontally disposed partition 5 of sheet metal, arran ed as shown in Fig. 2, in sinuous form. he sheet from which the partition is formed, is bent as shown to form a series of'grooves extending longitudinally of the caslng, the said grooves being of considerable depth so that the water at the partition is separated into a number of relatively thin layers, between each pair of which there is a passage for heat, the. arrangement being such that all of the layers are'inclosed by heated air on two sides.

In the present instance, this tubular structure is formed by bending a sheet of metal to form the partition 5, and afterward to form the outer inclosing walls of the chamber 3, the edges of the sheet being seamed as shown at 5 at the top of the casing. The

compartment 4 is formed by securing a Specification of Letters Patent. I

' Application filed July 29, 1919. Serial No. 314,060.

Patented Oct; 12, 1920.

curved strip at the underside of-the'chamber' 3, the edges of the strip being soldered or otherwise secured to the outer walls of the chamber 3.

This tubular casing 3l extends through the 'end walls of the incubator casing as shown in Figs. 3. and 4;, and a draft tube 6 is connected with one end of the said casing.

The heater, that is, the oil lamp 2 is con-' nected with the other end, by means of a T 7. This-T asshown more particularly in Figs. 1 and 4 hasits body portion vertical andits lateral branch connected with the adj acent end of the tubular casing 3-4.

The chimney 8 of the lamp is connected with the'lower end of the body portion, and a damper 9 which is controlled by a thermostat of usual construction is arrangedat the upper'end'of the body. -This thermostat as shown in Fig; 3 comprises'the usual wafer 10 which is connected to the damper by lever mechanism indicated at l'l, to open and close the damper in accordance with the temperature of the interior of the incubator.

Thechamber 3 whichmay be considered as the boiler has a filling and expansion nipple 12 outside the casing, and at the other end outside the casing there is a normally closed drain opening 13. The heated air from the lamp passes through the chamber 4 of the boiler, and between the side walls of the grooves of the partition 5, eventually escaping by way of the draft tube 6, and the water in the chamber 3 is heated'by the heated air. In order to evenly distribute the heat throughout the incubator casing, circulation pipes are connected with the casing 34=.

These pipes are shown more particularly in Figs. 2 and 3, each consisting of a body 14 and arms 15 and 16, the bodies extending substantially parallel with the casing in spaced relation, while'the arms 1516 are connected with the casing. Referring to Figs. 2 and 4, it will be seen that the arms 15 are connected to the casing 3-4 at a higher level'than are the arms 16, so that as the water is heated in the chamber 3, it

v will pass out by way of the arms 15 through the bodies 14, and will return by way of the arms 16 to the chamber 3, it being understood that the arms 1516 communicate with thechamber 3. I r

In practice, the incubator is well ventilated, an unusual number of openin 17 being provided for admitting cool air to the interior of the casing, and these openings may be closed by suitable dampers not shown. In operation, with the lamp in place, it will be evident that the heated air will pass from .the lamp through the chain ber 4, eventually passing out of the chamber by way-of-the'elbow 6; The water in -'the chamber 3 will become heated first at 7 case of leaka e there will be no dripping that end adjacent to the lamp. This heated water will pass out through the arm 15,:and the bodies 14 of the circulationpipes,andv will return to the chamber 3 byway of the I arms 16 at the end adjacent to the lamp; Thus there will be a continual circulation of water. As the water cools after its return to the chamber 3 it will sink to the bottom'of the said chamber and Will be reheated going again into the circulation. 7

It will-be noticed that all of the joints of the heater are on top, where they are easily accessible for repair, and Where in.

C on the eggs and into-the incubator. Iclaim:. v I f 1. In an incubator, =aWater heater comprising a central tubular structuredivided by a horizontally disposed partition into an- -.upper water chamber and a lower air chain-1 ber, and water circulation pipes at the oppoe site sides of the, casing and communicating with the Water chamber at the ends thereof,

said circulation pipes opening out of the water chamber. at a higher level than at. their entrance, the'partition being bent 1011". gitudinally into a series of relatively deep grooves to divide the water" into relatively thin layers, said tubular structure having means atone end i011 connection with a lamp, and having a draft pipe atthe other end. 7

2. In an incubator, a water heater comprising a central tubular structure divided bya"horizontally disposed partition into an upper Water chamber and a lower air chamber," andwater'circulation pipes at the op 'ber thepartitionbeing bent into a seriesof relatively wdeep folds spaced apart from each other to divide the Water into' relatively thin layers. r q U 4. A water-heater for incubators comprisr' ing a water chamber formed from .sheet' metal bent to formaconcave and a convex surface, the connection between the edges.

otthe sheetmetal being at the center of the convex surface, andthe concave surface be ing bent to form a series of. relatively deep longitudinally extending grooves, andan inclosing plate extending between the side edgesof the chamber and1. forming anfinclosed heatingchamber below the waten chamber. g j e V JOHN B. GLOVER. 

